A tank holding a quantity of liquid releasably connects to a portable pump assembly through a connector to provide a portable sprayer. The tank connects to a feed line that supplies spray nozzle with the liquid. The connector combines a quick disconnect connector with a pressure relief valve. The portable pump assembly includes an electric pump, a switch assembly, and a check valve. The portable pump assembly directs gas through the check valve into the connector to increase the gas pressure in the tank and force the liquid in the tank to flow through the feed line and out the spray nozzle. The switch assembly turns off the electric pump when the gas pressure in the tank exceeds a predetermined limit while maintaining the flow of liquid through the spray nozzle.

A sample dispenser includes a dosing unit, a cradle assembly, and tubing connecting the dosing unit and the cradle assembly. The dosing unit is configured to dispense sampling amounts of a flowable substance and includes a nozzle and a mechanical pump communicating with the nozzle. The cradle assembly includes a priming cradle configured to hold a compressible container of the flowable substance and to force the flowable substance out of the compressible container by applying a compressive force to the compressible container. The tubing allows communication of the flowable substance between the compressible container and the pump.

A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock. Thus, the water cleaner main unit and the water tank can be used together or separately subject to different application requirements.

A high pressure water cleaner with detachable water tank includes a water cleaner main unit having an internal hydraulic pump, a top receptacle and a feed water connector in the receptacle in communication with the hydraulic pump, and a water tank detachably insertable into the receptacle and lockable to the receptacle by a movable lock. Thus, the water cleaner main unit and the water tank can be used together or separately subject to different application requirements.

A portable airless sprayer comprises a housing, a motor, a pump, a spray tip and a trigger. The motor is mounted to the housing. The pump is mounted to the housing and is driven by the motor. The spray tip assembly receives pressurized fluid from the pump. The trigger is configured to actuate the spray tip assembly and activate the motor. A method of operating a portable airless sprayer comprises moving a lever over a stroke, displacing a valve pin, and activating a motor. The valve pin is displaced with the lever to actuate a spray valve. The motor is activated with the lever to drive a pump that provides fluid to the spray valve.

A portable airless sprayer comprises a housing, a motor, a pump, a spray tip and a trigger. The motor is mounted to the housing. The pump is mounted to the housing and is driven by the motor. The spray tip assembly receives pressurized fluid from the pump. The trigger is configured to actuate the spray tip assembly and activate the motor. A method of operating a portable airless sprayer comprises moving a lever over a stroke, displacing a valve pin, and activating a motor. The valve pin is displaced with the lever to actuate a spray valve. The motor is activated with the lever to drive a pump that provides fluid to the spray valve.

A fluid dispensing device comprises a housing body, a fluid container, a reciprocating piston fluid pump, a primary drive element and a spray tip. The housing body is configured to be carried and supported by an operator of the hand held airless fluid dispensing device during operation. The fluid container is supported by the housing body. The reciprocating piston fluid pump is coupled to the housing body and comprises at least two pumping chambers configured to be actuated out of phase by at least one piston. The primary drive element is coupled to the housing body and connected to the reciprocating piston fluid pump to actuate the at least one piston. The spray tip is connected to an outlet of at least one of the pumping chambers.

A fluid dispensing device comprises a housing body, a fluid container, a reciprocating piston fluid pump, a primary drive element and a spray tip. The housing body is configured to be carried and supported by an operator of the hand held airless fluid dispensing device during operation. The fluid container is supported by the housing body. The reciprocating piston fluid pump is coupled to the housing body and comprises at least two pumping chambers configured to be actuated out of phase by at least one piston. The primary drive element is coupled to the housing body and connected to the reciprocating piston fluid pump to actuate the at least one piston. The spray tip is connected to an outlet of at least one of the pumping chambers.

Disclosed is a dispensing device comprising a base unit and an articulated arm portion which extends from a part of the base unit, the base unit further comprises an actuation mechanism which includes a capacitive-type sensor for dispensing liquid and adapted to receive a refill unit insertible into the base unit in an inverted configuration with its outlet lowermost for the supply of liquid to the base unit.

Disclosed is a dispensing device comprising a base unit and an articulated arm portion which extends from a part of the base unit, the base unit further comprises an actuation mechanism which includes a capacitive-type sensor for dispensing liquid and adapted to receive a refill unit insertible into the base unit in an inverted configuration with its outlet lowermost for the supply of liquid to the base unit.